G - Physics – 02 – B
Patent
G - Physics
02
B
G02B 27/10 (2006.01) G02B 6/34 (2006.01) G02B 27/28 (2006.01) G02B 6/26 (2006.01) G02F 1/09 (2006.01)
Patent
CA 2222382
An optical fibre having a small numerical aperture (NA) is optically coupled with a short birefringent crystal to provide a polarization beam splitter. This arrangement obviates s the use of a GRIN lens coupled between an input optical fibre and the birefringent crystal and provides significant cost savings by allowing a short crystal to be used. In this invention, the birefringent crystal has a beam-shifting angle that is larger than the numerical aperture at the output end of the optical fibre.
Fibre optique à petite ouverture numérique (NA), couplée optiquement à un cristal biréfringent court afin de produire un diviseur de faisceau de polarisation. Cette configuration évite d'avoir à utiliser une lentille à gradient d'indice couplée entre une fibre optique d'entrée et le cristal biréfringent, et permet d'importantes économies de coûts grâce à l'utilisation d'un cristal court. Le cristal biréfringent a un angle de décalage de faisceau plus grand que l'ouverture numérique à l'extrémité de sortie de la fibre optique.
Jds Fitel Inc.
Teitelbaum Neil
LandOfFree
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